The pilots requested permission to descend from 10,000 feet to 6,000 feet, air traffic controllers said. After that, all radio contact was lost.

The plane began making its descent but vanished from radar screens at 6,200 feet in a mountainous area.

By the time the plane was due to return it should have burned up its fuel, RIA Novosti said.

The Sukhoi Superjet-100 airplane arrived in Jakarta as part of a demonstration tour of six Asian countries. It had been to Myanmar, Pakistan and Kazakhstan, and was due to visit Laos and Vietnam after Indonesia, RIA Novosti said.

Sukhoi manufactures military aircraft and is known especially for its fighter jets. Its civilian aircraft is narrow-bodied with a dual-class cabin that can transport 100 passengers over regional routes.

Unlike the previous operating system, Windows 7, Microsoft officially announced that Windows 8 will not be bundled with the standard software: Media Center. This means that users of Windows 8 will not be able to play DVDs without buying additional software.

In Microsoft's official blog about Windows 8, a team of Microsoft said that globally, DVD sales have dropped significantly from year to year. On the other hand, the team said, Microsoft needs to pay significant royalties to be able to play DVDs.

That's why Microsoft chose to separate the software for playback of traditional media, optical media (DVDs) and broadcast television. The software will be optimized for the Windows team 8 is an online multimedia.

Windows Media Player will be available in all of the Windows 8, but without the features of DVD playback.

This decision seemed to support the Ultrabook and trends on tablet devices that disable the optical drive.

If the user wants to continue to have Windows Media Center to play DVDs, it must purchase additional software as in the following diagram:

For users of Windows 8 Pro, can purchase an additional Windows Media Center Pack 8 for an upgrade. As for users of Windows 8, can purchase an additional Windows 8 Pro Pack.

The second additional software has the same function, namely to make the user has a media center, which includes the ability to play DVDs, recorded TV broadcasts (play file format DBV-T / S, ISDB-S / T, DMBH, and ATSC), as well as VOB file playback.